Lubricating device



Feb. 28, 1928. 1,660,943

v F. WARREN LUBRIGATING DEVICE Filed. Nov. 1. 1926 lNVENTOR Patented Feb. 28, 1928.

UNITED STATES PATENT OFFICE.

rnanx wanaan, or smrrm, wasnmo'ron, assronon we ran DERBY courm,

' y or SEATTLE, wasnmeron.

LUBBICATING DEVICE.

Application filed November 1, 1928. Serial No. 145,429.

My invention relates to improvements in lubricating devices for use in connect on with internal combustion engines to furnish liquid lubricant along with the fuel charge for the purpose of lubricating the valves and upper portions of the engine cylinders, and said invention isf'an improvement on the lubricating device disclosed in the copending ap lication of Charles R. Lumley filed Novem er 1, 1926, Serial N 0. 145,436.

The ob'ect of my invention is to improve and simplify the construction of lubricating devices of this nature and to so construct the same that they may be easily and inexpensively manufactured.

Another object is to provide a lubricating device of the constant level vacuum type in which the air'that serves as a vehicle for carrying the oil from said lubricating device is caused to pass downwardlyinto the oil to a point near the bottom of the. o1l receptacle through a conduit that is earned by a float therein.

Other and more specific objects will. be

apparent from the following description taken in connection with the accompanying drawings wherein- Fig. '1 is a view in vertical central section of a lubricating device constructed in accordance withmy invention, and

Fig. 2 is a viewpartly in section and part- 1 in elevation showing a modified form of the air inlet valve.-

Referring to the drawings, throughout which like reference numerals designate like parts, 5 is a receptacle or oil cup and 6 is va cover adapted to screw onto orotherwise fit the top of said receptacle in such a manher as to render the receptacle air ti ht except for a valve hereinafter describe The cover 6 carries substantially all of the'operative parts of the lubricating device as hereinafter described, and said cover has external brackets 7 by which it may be secured to a support as to the cowl of a motor vehicle.

The cover is provided with a normally horizontal passageway 8 that is connected with a vacuum .pipe or conduit 10 which leads to, and communicates with, the fuel intake of an internal combustion engine, not shown, in such a manner that the suction of the engine will be exerted through said pipe 10 when the engine is running. A normally vertical passageway 11 extends operation.

through the cover 6 and intersects the passageway 8. A valve seat 12 for the reception of aball check valve 13 is formed in t e lower end of the vertical passageway 11 and a screw 14 is provided above the valve 13 for limiting the amount of opening of the valve 13 and for preventing dis lacement of said valve. The screw 14 is a justablefrom the exterior of the cover 5. B

I this arrangement it will be seen that oil laden air from the interior of the oil receptacle-may be drawn through the pipe 10 to an engine but that no air nor gas can enter the oil rece tacle from this pipe on account ofthe chec ing action of the valve 13.

The cover 6 is further provided with a vertical passageway 15, preferably axially arranged, that extends from the top of said cover downwardly through a boss 16 carried by the cover. A valve seat 17 is provided in the upper end of the passageway 15 for the reception of a ball check valve 18 which prevents the intake of air unless itis held in an open position. A cap 20 having air inlet perforations 21 serves as a cover for the passageway 15 and as a means for preventing displacement of the valve 18.

22 is a tubular float stem secured to a float 23 and slidably dis osed within the air inlet passageway 15. he up er end of the float. stem 22 has a means 24 or engaging and lifting the valve 18 and the lower endof said float stem is openand extends to a point near the bottom of the receptacle 5 so that the air entering through the perforations 21 and passing thevalve 18 will be 'drawn down through the tubular stem 22 and out of the bottom end thereof and will .rise or bubble up through the oil, picking up or becomin saturated with the oil and .thence passlng through the pipe 10 to' it ge said rece tacle the tubular stem will move up and own in the air passageway 15 engaging with and opening the valve 18 as the float is raised and permitti said valve to 'close as the float is lowered. e vertical movement of the float is relatively slight in An oil inlet conduit 25 connects the up er end of the receptacle. 5 with any suita 10 oil supply receptacle, not shown, that is 10- cated so that the oil can not flow by gravity but may be drawn by suction into the rece tacle 5 the operation of this device when suction is exerted through the pipe and the valve 18 is closed, oil will be drawn in through the pipe 25. As the oil. rises in said receptacle it will lift the float 23 and cause the member 24 on the upper end of the stem 22 to engage with and lift-the valve 18. This permits air to be drawn down through the tubular stem 22 and out at the bottom end of the same. This air passes up through the oil picking up particles of the oil and is finally drawn oif throu h the pipe 10. The air thus furnished by t he opening of the valve 18 relieves the vacuum in the receptacle 5 sufliciently. so that the intake of oil is stopped or reduced to such an extent as to only furnish enough oil to keep the oil level A in the receptacle substantially constant. The float 23 will always sink to substantially the same depth in the oil so that the air passing' out at the bottom-of the tubular stem 22 will always pass upwardly through the same amount or depth of oil and will always pick up or be laden with the same relative amount of oil, thus insuring the delivery at all times of a uniform quantity of oil to the parts that are to be lubricated.

In Fig. 2 I have shown a device in which the upper end of a tubular valve stem 26 on a float 32 is closed and the sides of said valve stem have perforations 27 therein that understood that this disclosure is merely illustrative and that such changes in the invention may be made as are within the scope and spirit of the following claims.

.What I claim is:

1.111 a lubricating device, a'receptacle,

suction operated oil inlet conduit means connected w1th said receptacle, vacuum conduit.

means connected with the upper portion of said receptacle, a valve in said vacuum confloat andhaving an upper air'intakeend communicatin with the atmosphere and a lower air disc arge end positioned near the bottom of said receptacle, and valve means opened by the rising and closed by the lowering of said float for controlling the inlet of air. Y

2. In a lubricating device, a receptacle, suction operated oil inlet conduit means connected with said receptacle above the maximum oil-level thereof, vacuum conduit means connected with the upper portion of said receptacle, a valve in" said. vacuum conduit means, means forming an air inlet passageway at the top of said receptacle, a float arranged to be supported by the oil in said receptacle, a tubular. stem carried by said float and' slidable in said air inlet passageway for conducting'air to the lower portion of said receptacle, and valve means arranged to be closed by the rising of said float and opened by the lowering of said float for controlling the inlet of air.

3. In a lubricating device, a receptacle,

conduit means through which oil may be drawn into said receptacle, a suction conduit connected with the upper portion of said receptacle, a valve in said suction conduit, means forming a vertical air inlet passageway at the top of said receptacle, a check valve in said air inlet passageway, a float, and a tubular stem secured to and extending downwardly through said float and slidable in said air inlet passageway for opening said check valve and for conducting air downwardly to a point near the bottom of said receptacle.

In witness whereof, I hereunto subscribe my name this 21st day Of OCtObGI, A. D.

FRANK WARREN. 

